4539899257 has 2 divisors, whose sum is σ = 4539899258. Its totient is φ = 4539899256.

The previous prime is 4539899237. The next prime is 4539899261. The reversal of 4539899257 is 7529989354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4115992336 + 423906921 = 64156^2 + 20589^2 .

It is a cyclic number.

It is not a de Polignac number, because 4539899257 - 2¹⁵ = 4539866489 is a prime.

It is a super-2 number, since 2×4539899257² = 41221370527418304098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4539899195 and 4539899204.

It is not a weakly prime, because it can be changed into another prime (4539899227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269949628 + 2269949629.

It is an arithmetic number, because the mean of its divisors is an integer number (2269949629).

Almost surely, 2^4539899257 is an apocalyptic number.

It is an amenable number.

4539899257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539899257 is an equidigital number, since it uses as much as digits as its factorization.

4539899257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24494400, while the sum is 61.

The square root of 4539899257 is about 67378.7745287787. The cubic root of 4539899257 is about 1655.8286977747.

The spelling of 4539899257 in words is "four billion, five hundred thirty-nine million, eight hundred ninety-nine thousand, two hundred fifty-seven".